Design Files
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5 V, 2.2 V and 2.5 V dual UART, 5 Mbit/s (max.), with 64-byte FIFOs
The SC16C752B is a dual Universal Asynchronous Receiver/Transmitter (UART) with 64-byte FIFOs, automatic hardware/software flow control, and data rates up to 5 Mbit/s (3.3 V and 5 V). The SC16C752B offers enhanced features. It has a Transmission Control Register (TCR) that stores receiver FIFO threshold levels to start/stop transmission during hardware and software flow control. With the FIFO Rdy register, the software gets the status of TXRDYn/RXRDYn for all four ports in one access. On-chip status registers provide the user with error indications, operational status, and modem interface control. System interrupts may be tailored to meet user requirements. An internal loopback capability allows on-board diagnostics.
The UART transmits data, sent to it over the peripheral 8-bit bus, on the TXn signal and receives characters on the RXn signal. Characters can be programmed to be 5 bits, 6 bits, 7 bits, or 8 bits. The UART has a 64-byte receive FIFO and transmit FIFO and can be programmed to interrupt at different trigger levels. The UART generates its own desired baud rate based upon a programmable divisor and its input clock. It can transmit even, odd, or no parity and 1, 1.5, or 2 stop bits. The receiver can detect break, idle, or framing errors, FIFO overflow, and parity errors. The transmitter can detect FIFO underflow. The UART also contains a software interface for modem control operations, and has software flow control and hardware flow control capabilities.
The SC16C752B is available in plastic LQFP48 and HVQFN32 packages.
Product Details
Features
Key Features
- Pin compatible with SC16C2550 with additional enhancements
- Up to 5 Mbit/s baud rate (at 3.3 V and 5 V; at 2.5 V maximum baud rate is 3 Mbit/s)
- 64-byte transmit FIFO
- 64-byte receive FIFO with error flags
- Programmable and selectable transmit and receive FIFO trigger levels for DMA and interrupt generation
- Optional data flow resume by Xon any character
- DMA signalling capability for both received and transmitted data
- Supports 5 V, 3.3 V and 2.5 V operation
- 5 V tolerant on input only pins1
- Software selectable baud rate generator
- Prescaler provides additional divide-by-4 function
- Industrial temperature range (–40 °C to +85 °C)
- Pin and software compatible with SC16C752, TL16C752
- Fast data bus access time
- Programmable sleep mode
- False start bit detection
- Complete status reporting capabilities in both normal and sleep mode
- Line break generation and detection
- Internal test and loopback capabilities
- Fully prioritized interrupt system controls
- Modem control functions (CTS, RTS, DSR, DTR, RI, and CD)
Software/Hardware Flow Control
- Programmable Xon/Xoff characters
- Programmable auto-RTS and auto-CTS
Programmable Serial Interface
- 5-bit, 6-bit, 7-bit, or 8-bit characters
- Even, odd, or no parity bit generation and detection
- 1, 1.5, or 2 stop bit generation
Part numbers include: SC16C752BIB48, SC16C752BIBS.
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Design Resources
Engineering Services
To get further assistance directly from NXP, please see our Engineering Services.
2 engineering services
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Independent Design House (IDH)
Hardware Design Services
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Independent Design House (IDH)
Embedded Software Design
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